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Notation Question: Dots or ties over bar lines? Why?

I recently learned that when a note needs to extend over a bar line on a staff, you can technically use either dots or ties, but using dots for this is basically considered obsolete so people usually always use ties to accomplish this. I understand what dotted notes and ties are and what they mean, but I don't see the difference in using one or the other to cross bar lines on a staff.
Can someone explain this please? Why do people prefer using ties over bar lines, instead of dotted notes?
Thanks.

Bar lines signal, to a large extent, something new. New accents occur; old accidentals no longer apply, etc. A tie recognize this explicitly. Generally engraving practice doe not have notes crossing rhythmic sub-divisions through ties. So in 4-4 time, {dotted-quarter, dotted-quarter,quarter} is uncommon; the second quarter has just a dot on its first sub-beat rather than a note. Similarly for a dot crossing the bar line. Normally the previous example would be {dotted-quarter, eighth-tie-quarter, quarter). Dots do not extend notes to a "more highly accented" part of a beat or sub-beat.

I use the 3-3-2 (eighth note) division of a 4/4 measure so I checked out lots of Latin American music, popular, classical, etc. I always found the tie being used.

If you can’t quote a source, please don’t waste my time with a response.

Sooo, if I post the source will you answer my question then? Because don't want to waste MY time, looking through a 15 minute video for the small part where this was mentioned if it won't get me any closer to the answer.
Let me know. Thnx.

If anyone out there can tell me why it is that people use ties for this instead of dots, I'd be thankful if you're willing to explain the reason.
Its starting to seem like this is just one of those things that doesn't have a reason, it just is that way, just because it is.
But if there's an actual reason, please tell me.
Thank you.

I recently learned that when a note needs to extend over a bar line on a staff, you can technically use either dots or ties

Never heard of dots as a choice in that context. Never in 50 years (on and off) of reading music theory.

Originally Posted by bloopaloop

Why do people prefer using ties over bar lines, instead of dotted notes?

Because ties are correct.
Because they, like me, have never heard of the dot option.
Because, if they have heard of that option, they know it's obsolete (as your source says), so they know it's no longer correct (if it ever was).
Because it looks confusing, it makes no sense according to the rules for notating metre.

But basically, if you've got a note that's too big to fit in a bar, you have to tie it into the next bar. You can't use a dot without changing the time signature.

So in 4/4 for example, if you've got something on the first three beats and you want a note that lasts two beats but starts on the fourth beat of the bar, it doesn't fit. You could change the time signature to 5/4 OR you fill up the bar and tie the note into the first beat of the next bar.

But basically, if you've got a note that's too big to fit in a bar, you have to tie it into the next bar. You can't use a dot without changing the time signature.

That's how I've always understood it too.
Maybe we need to ask the OP exactly where he "recently learned that when a note needs to extend over a bar line on a staff, you can technically use either dots or ties". How authoritative is that source? (My guess: not very.)